CN103523998A - Purification method of controlling foreign pollution source and ecologically restoring black-odor riverway - Google Patents

Purification method of controlling foreign pollution source and ecologically restoring black-odor riverway Download PDF

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CN103523998A
CN103523998A CN201310500593.3A CN201310500593A CN103523998A CN 103523998 A CN103523998 A CN 103523998A CN 201310500593 A CN201310500593 A CN 201310500593A CN 103523998 A CN103523998 A CN 103523998A
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river course
water
river
aeration
plant
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CN103523998B (en
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吕志刚
许盛凯
漆志飞
武涛
吴湧
蒋浩
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Jiangsu Jiangda Ecological Technology Co Ltd
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Jiangsu Jiangda Ecological Technology Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40Protecting water resources
    • Y02A20/402River restoration
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention relates to a purification method of controlling a foreign pollution source and ecologically restoring a black-odor riverway. The purification method adopts a process combining processes of pretreating sewage outlet wastewater by virtue of a biofilm purification device, planting aquatic plants in the riverway, stocking aquatic animals, installing aeration oxygen increasing equipment and the like. Compared with an existing river ecologic restoration process, the purification method can be used for effectively controlling a sewage outlet of a small size polluted riverway to be adapted to great fluctuation of the riverway water quality and the climate conditions, has strong adaptability to the water quality variation, is good in resistance to shock loading and can be used for effectively removing the phenomenon of black-odor river water as well as has a relatively good effect of removing organic carbon, nitrogen and phosphorus; According to the purification method, the treated effluent quality is stable, the engineering investment is little, the running cost is low, and the purification method is suitable for treating riverway waters with various pollutions.

Description

A kind of purifying method of controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem
Technical field
The present invention relates to a kind of purifying method of controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem, relate in particular to and a kind ofly take ecological restoring method as main, the river course purification process that collection sewage biotreatment method combines, belongs to ecological reestablishment field.
Background technology
Along with the development of social production, the river of countries in the world is all faced with the pollution in various degree from aspects such as industry, agricultural, lives.The landscape water bodies such as municipal lake pool, river course are integral parts important in human settlement environment in city; but due to features such as it easily pollute, water environment capacity is little, water body self-purification ability is poor; be easy to become the receptor of resident living sewage, rainwater and rubbish; thereby cause a large amount of consumption of Dissolved Oxygen in Water; cause water hypoxia and smelly state darkly, make the whole ecosystem occur crisis.
The pollution of river is the universal phenomenon of the network of waterways, China city, China's treating city black foul river mainly adopts public works means such as cutting dirt, revetment, desilting, but for river course, most of outskirts of a town, owing to lacking of capital and there is no the reasons such as unified planning, cannot carry out limited section of dirt.Make a general survey of this type of polluted river is administered experimental study and engineering practice both at home and abroad, Technology adopts the sewage treatment that some treatment effects are stable, economic performance is good mostly.From spatial distribution, can be divided into: river is drawn to river course water system, and near the sewage work introducing carries out strange land facture; In river course, build treatment system, along the in situ treatment of Cheng Jinhang river water cleaning.
The pollution of harnessing a river is a complicated systems engineering, in polluted river channel water that use or the tested technology of administering, is mainly divided into physics, chemistry and biological three class restorative procedures both at home and abroad at present.Bioremediation technology is to utilize specific biological (plant, microorganism or protozoon) absorption, conversion, removing or degradation of contaminant, improve the capacity of self-regulation of the ecosystem, sophisticated systems function, realize the biological control measure that environmental purification, ecologic effect recover.
Summary of the invention
The object of the present invention is to provide a kind of biological synthesis purification process of administering black smelly river course, the method is constructed in conjunction with municipal river course remold engineering, can not only make the water quality in black smelly river course be purified, and can keep water quality operation steady in a long-term.Be mainly used in the restoration of the ecosystem of the surface water bodies such as the deep purifying of municipal sewage treatment, early-stage rainwater and industrial tail water and contaminated river, lake.
According to technical scheme provided by the invention, a kind of purifying method of controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem, step is as follows:
(1) bio-contact oxidation: at Drain contamination for river channel mouth, biological contact oxidation plant is set, described biological contact oxidation plant comprises anoxic pond, aerobic aeration pond and settling tank; Sewage enters flow through successively after biological contact oxidation plant anoxic pond, aerobic aeration pond and settling tank;
(2) substrate pre-treatment: black smelly river course is carried out to desilting, the objectionable constituent of unsuitable plant-growth in cleaning river bed, and river course substrate is carried out to pre-treatment, and the river bed of desilting 20-30cm, substrate is pressed 100-200g/m 2sow unslaked lime improvement microbiobacterial agent, improve substrate;
(3) build submerged plant band: on pretreated river course substrate, change the loess of filling out 15-30cm, in loess Shang Zhong planting submerged plant group;
(4) nourishment source: carry out the fresh water source of supply in Zhong,Dui river course, river course, then with aeration oxygen replenishing equipment, water body is carried out to aeration oxygen replenishing processing;
(5) put hydrocoles in a suitable place to breed: in river course, put hydrocoles in a suitable place to breed; Described hydrocoles comprises zooplankton, filter-feeding fish, predacious fish and zoobenthos;
(6) floatingleaved plant: at both sides, river course plantation floatingleaved plant, the cane of floatingleaved plant can provide the place depending on for the bacterium in water, zooplankton, algae, another notable feature is to affect transmissivity and the natural oxygen enrichment of sunlight in water, and then suppresses algal grown;
(7) build emergent vegetation zone: in two sides, river course, build ecological revetment, plantation emergent, builds vegetation zone to build biological floating bed mode;
(8) maintenance management: organize content comprises the aspects such as the river course water surface, waterplant, hydrocoles, oxygenating device, and the scheduling of the water resources in river course.By carrying out implementation system Ecology, manage, promote water body benign cycle, keep good water ecological environment.
Described anoxic pond left end arranges water-in, sets gradually the first filler, the second filler and the 3rd filler in anoxic pond;
Packing layer is comprised of natural mineral volcanics, zeolite and river sand, and described the first packing material size is 30-80mm, and the second packing material size is 20-60mm, and the 3rd packing material size is 10-30mm.
Described aerobic aeration pond adopts the mode of micro-pore aeration, dish formula aeration or disc type aeration, through the river after Biological Pretreatment, enters river course.
The described waterplant of step (3) in thorn eel grass, close tooth eel grass, black algae, waterweed, water caltrop, hornwort, eel grass one or more.
The described aeration oxygen replenishing equipment of step (4) mainly comprises jet aerator, micro-pore aeration, dish formula aeration, disc type aeration and/or mobile solar energy aeration boat.
In step (5), filter-feeding fish is silver carp bighead, and described predacious fish is snakehead and mandarin fish, and described zoobenthos is screw, freshwater mussel and spiral shell;
Wherein said filter-feeding fish and predacious fish are 30-80g/m 3, described screw, freshwater mussel and spiral shell are 10-50g/m 3.
The described emergent of step (6) is one or more in reed, cattail, Spiked Loosestrife or Scirpus tabernaemontani.
In river course, build aquatic vegetation, select one or more plantations in water caltrop, p.malaianus, Haloragidaceae Myriophyllum spicatum, thorn eel grass, close tooth eel grass, waterweed, hornwort, water caltrop, Potamogeton pectinatus L and eel grass, density is 30-60 strain/m 2; Waterplant coverage is 30%-60%; Maintain good ecotope, the nutrition source that plant is absorbed is partly with water-outlet body, regularly submerged plant is pruned; For reducing the nutrition of waterplant absorption, in water body, return, gather in and salvage autumn and winter to the waterplant of apoptosis, and death domain is reseeded.
The purification system that original position is administered river sewage sewage draining exit comprises biological contact oxidation pond; Described biological contact oxidation pond is to be combined by anoxia/aerobic biological processing unit, described anoxic/aerobic treatment unit is comprised of direct-connected anoxic pond and the Aerobic Pond that is provided with aerating apparatus, in anoxia/aerobic biological processing unit, anoxic section is provided with the filler for enriched biological film, select volcanics mineral or zeolite filler, particle diameter is respectively 30-35mm, 20-25mm, 10-15mm, is divided into three layers.Distribute water and air is even, is not easy to stop up.Through the river after Biological Pretreatment, enter river course.
River course is inner plants different waterplant, stocked carp, zooplankton, zoobenthos, filler, aeration oxygen replenishing equipment and beneficial microorganism population by selection, by the measure of artificial-strengthening engineering, rebuild and recover the ecosystem--the artificial-strengthening ecosystem in city, make black smelly river course recover gradually the self-purification capacity of water body, thereby reach the long-range object purifying water.
Beneficial effect of the present invention: in Huo Qi tributary, middle-size and small-size river, contaminated river is carried out a biological disposal upon by unit for treating water after the drainage of bank, Organic carbon and nitrogen, the phosphorus that can effectively remove in sewage draining exit sewage pollute.Method of the present invention adopts bio-contact oxidation to process, and can adapt to fluctuating widely of quality of river water and weather condition, and good to change of water quality adaptability, anti impulsion load is good, can effectively eliminate the black smelly phenomenon of river.Avoid sewage draining exit waste water directly to enter river course, alleviate the lifting capacity that river channel ecology is repaired, avoid the generation of aquatic animals and plants in the ecosystem " poisoning " phenomenon.
Experiment shows, method of the present invention has good removal effect to organic carbon and nitrogen, phosphorus, and the clearance of COD is reached more than 60%, and the clearance of TN reaches more than 40%, and the clearance of TP reaches more than 60%, processes stable effluent quality.
The restoration of the ecosystem means that method of the present invention combines in conjunction with channel cleanout, aquatic animals and plants, aeration oxygen replenishing, biological rope etc., the quality of river water after system is processed obviously improves, and can bring up to IV class by original bad V class.
Method of the present invention can make full use of river course idle land around, realizes the artificial-strengthening purifying treatment of river sewage, and the main process of sewage disposal is blended among river course environment administers.The water body in river course is in good self-purification process all the time, can effectively administer river course black smelly.The investment of overall system and running cost all effectively reduce, and also take into account riverside landscape effect, have good ecologic effect.
Accompanying drawing explanation
Fig. 1 is biological contact oxidation plant of the present invention.
Fig. 2 is Ecological Recovery of Water system schematic.
Embodiment
The improvement of unslaked lime described in following examples microbiobacterial agent is purchased from Wuxi City Kai Er Chemicals company limited.
Embodiment 1
The present invention selected Jiangsu needs the black smelly river course of administering, and river course is about 1000 meters, wide approximately 25 meters, and the depth of water is 2 meters of left and right.River course periphery has sanitary sewage and industrial sewage sewage draining exit, and sewage irregularly enters river course.By sewage centralized collection in anoxia/aerobic biological catalytic oxidation device.
As shown in Figure 1, sewage enters respectively volcanics mineral or zeolite filler from top to bottom, particle diameter is respectively 30-35mm the first filler 2,20-25mm the second filler 3,10-15mm the 3rd filler 4, filler is divided into three layers according to packing material size difference, sewage enters aerobic aeration pond 5 after anoxic biochemical treatment, water after biochemical treatment enters settling tank 6 by overflow, and then discharge water enters river course.
A purifying method of controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem, step is as follows:
(1) bio-contact oxidation: at Drain contamination for river channel mouth, biological contact oxidation plant is set, described biological contact oxidation plant comprises anoxic pond 7, aerobic aeration pond 5 and settling tank 6; Sewage enters flow through successively after biological contact oxidation plant anoxic pond 7, aerobic aeration pond 5 and settling tank 6;
(2) substrate pre-treatment: black smelly river course is carried out to desilting, the objectionable constituent of unsuitable plant-growth in cleaning river bed, and river course substrate is carried out to pre-treatment, and the river bed of desilting 20cm, substrate is pressed 200g/m 2sow unslaked lime improvement microbiobacterial agent, improve substrate;
(3) build submerged plant band: on pretreated river course substrate, change the loess of filling out 15cm, in loess Shang Zhong planting submerged plant group;
(4) nourishment source: carry out the fresh water source of supply in Zhong,Dui river course, river course, then with aeration oxygen replenishing equipment, water body is carried out to aeration oxygen replenishing processing;
(5) put hydrocoles in a suitable place to breed: in river course, put hydrocoles in a suitable place to breed; Described hydrocoles comprises zooplankton, filter-feeding fish, predacious fish and zoobenthos;
(6) floatingleaved plant: at both sides, river course plantation floatingleaved plant, the cane of floatingleaved plant can provide the place depending on for the bacterium in water, zooplankton, algae, another notable feature is to affect transmissivity and the natural oxygen enrichment of sunlight in water, and then suppresses algal grown;
(7) build emergent vegetation zone: in two sides, river course, build ecological revetment, plantation emergent, builds vegetation zone to build biological floating bed mode;
(8) maintenance management: organize content comprises the aspects such as the river course water surface, waterplant, hydrocoles, oxygenating device, and the scheduling of the water resources in river course.By carrying out implementation system Ecology, manage, promote water body benign cycle, keep good water ecological environment.
Be illustrated in figure 2 Ecological Recovery of Water system schematic.River course river is all drained, thoroughly removed bed-silt, the soil to the objectionable constituent of unsuitable plant-growth, and strongly-acid soil, strongly alkaline soil, sandstone soil etc., the technical measures of taking to change the soil of suitable planting or taking to improve soil.By exothermic effects, kill the objectionable impuritiess such as bacterium in soil, virus, play the effect that regulates pH value in substrate simultaneously, sterilizing agent is splashed and should evenly, do not omitted, and guarantees that the river course substrate of whole construction is sterilized thoroughly.
Blocking and build and pre-treatment facility in import and export both sides, river course, can prevent that large floating matter etc. from entering river course, and moisturizing water source is carried out to pre-treatment.First moisturizing need be carried out according to the plantation progress of submerged plant, after submerged plant planting is good, starts moisturizing.
In river course, build aquatic vegetation, wherein water caltrop, p.malaianus, Haloragidaceae Myriophyllum spicatum are selected by submerged plant group, and planting density is 50-60 strain/m 2.Floatingleaved plant is selected water chestnut, and planting density is 15-30 strain/m 2.Pleuston is selected Herba Eichhorniae, and planting density is 40-60 strain/m 2.Waterplant coverage is 40-60%.
Take aeration oxygen replenishing technology, jet aerator or microporous aeration device are installed in both sides, river course, improve the decomposition efficiency of microbe.Jet-flow aeration have stir that mixing ability is strong, oxygen transfer efficiency is high, with low cost, energy consumption is low, installation and maintenance are easy, without setting up the advantages such as Ventilator Room.
River course completes after moisturizing, puts silver carp and bighead in a suitable place to breed, every kind of about 30g/m of fish 3, and throw in 10g/m 3spiral shell, throw in the food chain that hydrocoles can be improved the ecosystem, the food chain formation food web that is cross-linked with each other, food web is more complicated, the ecosystem is more stable.
After two months, according to waterplant surviving rate, suitably reseed and adjust.
Embodiment 2
As shown in Figure 1, sewage enters respectively volcanics mineral or zeolite filler from top to bottom, particle diameter is respectively 40-50mm the first filler 2,30-20mm the second filler 3,20-10mm the 3rd filler 4, filler is divided into three layers according to packing material size difference, sewage enters aerobic aeration pond 5 after anoxic biochemical treatment, water after biochemical treatment enters settling tank 6 by overflow, and then discharge water enters river course.
As Fig. 2 Ecological Recovery of Water system schematic.River course river is all drained, thoroughly removed bed-silt, the soil to the objectionable constituent of unsuitable plant-growth, and strongly-acid soil, strongly alkaline soil, sandstone soil etc., the technical measures of taking to change the soil of suitable planting or taking to improve soil.Sterilizing agent is splashed should be evenly, do not omit, and guarantees that the river course substrate of whole construction is sterilized thoroughly.
A purifying method of controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem, step is as follows:
(1) bio-contact oxidation: at Drain contamination for river channel mouth, biological contact oxidation plant is set, described biological contact oxidation plant comprises anoxic pond, aerobic aeration pond and settling tank; Sewage enters flow through successively after biological contact oxidation plant anoxic pond, aerobic aeration pond and settling tank;
(2) substrate pre-treatment: black smelly river course is carried out to desilting, the objectionable constituent of unsuitable plant-growth in cleaning river bed, and river course substrate is carried out to pre-treatment, and the river bed of desilting 30cm, substrate is pressed 100g/m 2sow unslaked lime improvement microbiobacterial agent, improve substrate;
(3) build submerged plant band: on pretreated river course substrate, change the loess of filling out 30cm, in loess Shang Zhong planting submerged plant group;
(4) nourishment source: carry out the fresh water source of supply in Zhong,Dui river course, river course, then with aeration oxygen replenishing equipment, water body is carried out to aeration oxygen replenishing processing;
(5) put hydrocoles in a suitable place to breed: in river course, put hydrocoles in a suitable place to breed; Described hydrocoles comprises zooplankton, filter-feeding fish, predacious fish and zoobenthos;
(6) floatingleaved plant: at both sides, river course plantation floatingleaved plant, the cane of floatingleaved plant can provide the place depending on for the bacterium in water, zooplankton, algae, another notable feature is to affect transmissivity and the natural oxygen enrichment of sunlight in water, and then suppresses algal grown;
(7) build emergent vegetation zone: in two sides, river course, build ecological revetment, plantation emergent, builds vegetation zone to build biological floating bed mode;
(8) maintenance management: organize content comprises the aspects such as the river course water surface, waterplant, hydrocoles, oxygenating device, and the scheduling of the water resources in river course.By carrying out implementation system Ecology, manage, promote water body benign cycle, keep good water ecological environment.
In river course, build water administration plant community, wherein thorn eel grass, close tooth eel grass, waterweed, hornwort are selected by submerged plant group, and planting density is 40-60 strain/m 2.Floatingleaved plant is selected water lily, and planting density is 20 ~ 40 strains/m 2.Pleuston is selected the green watermifoil of powder, and planting density is 40-60 strain/m 2.Waterplant coverage is 30-50%.
Take aeration oxygen replenishing technology, jet aerator or microporous aeration device are installed in both sides, river course, improve the decomposition efficiency of microbe.River course completes after moisturizing, puts silver carp and bighead in a suitable place to breed, every kind of about 50g/m of fish 3, and throw in a certain amount of spiral shell, about 20g/m 3, throw in the food chain that hydrocoles can be improved the ecosystem, the food chain formation food web that is cross-linked with each other, food web is more complicated, and the ecosystem is more stable.
After three months, according to waterplant surviving rate, suitably reseed and adjust.
Embodiment 3
As shown in Figure 1, sewage enters respectively volcanics mineral or zeolite filler from top to bottom, particle diameter is respectively 60-80mm the first filler 2,40-60mm the second filler 3,30-10mm the 3rd filler 4, filler is divided into three layers according to packing material size difference, sewage enters aerobic aeration pond 5 after anoxic biochemical treatment, water after biochemical treatment enters settling tank 6 by overflow, and then discharge water enters river course.
As Fig. 2 Ecological Recovery of Water system schematic.River course river is all drained, thoroughly removed bed-silt, the soil to the objectionable constituent of unsuitable plant-growth, and strongly-acid soil, strongly alkaline soil, sandstone soil etc., the technical measures of taking to change the soil of suitable planting or taking to improve soil.Adopt sterilizing agent splash should be evenly, do not omit, guarantee that the river course substrate of whole construction is sterilized thoroughly.
A purifying method of controlling extraneous contamination source and the black smelly river course of restoration of the ecosystem, step is as follows:
(1) bio-contact oxidation: at Drain contamination for river channel mouth, biological contact oxidation plant is set, described biological contact oxidation plant comprises anoxic pond, aerobic aeration pond and settling tank; Sewage enters flow through successively after biological contact oxidation plant anoxic pond, aerobic aeration pond and settling tank;
(2) substrate pre-treatment: black smelly river course is carried out to desilting, the objectionable constituent of unsuitable plant-growth in cleaning river bed, and river course substrate is carried out to pre-treatment, and the river bed of desilting 25cm, substrate is pressed 150g/m 2sow unslaked lime improvement microbiobacterial agent, improve substrate;
(3) build submerged plant band: on pretreated river course substrate, change the loess of filling out 20cm, in loess Shang Zhong planting submerged plant group;
(4) nourishment source: carry out the fresh water source of supply in Zhong,Dui river course, river course, then with aeration oxygen replenishing equipment, water body is carried out to aeration oxygen replenishing processing;
(5) put hydrocoles in a suitable place to breed: in river course, put hydrocoles in a suitable place to breed; Described hydrocoles comprises zooplankton, filter-feeding fish, predacious fish and zoobenthos;
(6) floatingleaved plant: at both sides, river course plantation floatingleaved plant, the cane of floatingleaved plant can provide the place depending on for the bacterium in water, zooplankton, algae, another notable feature is to affect transmissivity and the natural oxygen enrichment of sunlight in water, and then suppresses algal grown;
(7) build emergent vegetation zone: in two sides, river course, build ecological revetment, plantation emergent, builds vegetation zone to build biological floating bed mode;
(8) maintenance management: organize content comprises the aspects such as the river course water surface, waterplant, hydrocoles, oxygenating device, and the scheduling of the water resources in river course.By carrying out implementation system Ecology, manage, promote water body benign cycle, keep good water ecological environment.
In river course, build water administration plant community, wherein water caltrop, p.malaianus, hornwort are selected by submerged plant group, and planting density is 30-50 strain/m 2.Floatingleaved plant is selected floating heart, and planting density is 20-30 strain/m 2.Pleuston is selected the green watermifoil of powder, and planting density is 30-60 strain/m 2.Waterplant coverage is 35-60%.
Take aeration oxygen replenishing technology, jet aerator or microporous aeration device are installed in both sides, river course, improve the decomposition efficiency of microbe.River course completes after moisturizing, puts silver carp and bighead in a suitable place to breed, every kind of about 60g/m of fish 3, and throw in a certain amount of spiral shell, about 30g/m 3, throw in the food chain that hydrocoles can be improved the ecosystem, the food chain formation food web that is cross-linked with each other, food web is more complicated, and the ecosystem is more stable.
After three months, according to waterplant surviving rate, suitably reseed and adjust.
Applicant's statement, the present invention illustrates processing step of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned processing step, does not mean that the present invention must rely on above-mentioned processing step and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of the selected raw material of the present invention and ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.

Claims (9)

1. control the purifying method in extraneous contamination source and the black smelly river course of restoration of the ecosystem, it is characterized in that step is as follows:
(1) bio-contact oxidation: at Drain contamination for river channel mouth, biological contact oxidation plant is set, described biological contact oxidation plant comprises anoxic pond (7), aerobic aeration pond (5) and settling tank (6); Sewage enters flow through successively after biological contact oxidation plant anoxic pond (7), aerobic aeration pond (5) and settling tank (6);
(2) substrate pre-treatment: black smelly river course is carried out to desilting, the objectionable constituent of unsuitable plant-growth in cleaning river bed, and river course substrate is carried out to pre-treatment, and the river bed of desilting 20-30cm, substrate is pressed 100-200g/m 2sow unslaked lime improvement microbiobacterial agent, improve substrate;
(3) build submerged plant band: on pretreated river course substrate, change the loess of filling out 15-30cm, in loess Shang Zhong planting submerged plant group;
(4) nourishment source: carry out the fresh water source of supply in Zhong,Dui river course, river course, then with aeration oxygen replenishing equipment, water body is carried out to aeration oxygen replenishing processing;
(5) put hydrocoles in a suitable place to breed: in river course, put hydrocoles in a suitable place to breed; Described hydrocoles comprises zooplankton, filter-feeding fish, predacious fish and zoobenthos;
(6) floatingleaved plant: at both sides, river course plantation floatingleaved plant, the cane of floatingleaved plant can provide the place depending on for the bacterium in water, zooplankton, algae, another notable feature is to affect transmissivity and the natural oxygen enrichment of sunlight in water, and then suppresses algal grown;
(7) build emergent vegetation zone: in two sides, river course, build ecological revetment, plantation emergent, builds vegetation zone to build biological floating bed mode;
(8) maintenance management: organize content comprises the aspects such as the river course water surface, waterplant, hydrocoles, oxygenating device, and the scheduling of the water resources in river course.
2. by carrying out implementation system Ecology, manage, promote water body benign cycle, keep good water ecological environment.
3. control as claimed in claim 1 the purifying method in extraneous contamination source and the black smelly river course of restoration of the ecosystem, it is characterized in that: described anoxic pond (7) left end arranges water-in (1), in anoxic pond (7), set gradually the first filler (2), the second filler (3) and the 3rd filler (4);
Packing layer is comprised of natural mineral volcanics, zeolite and river sand, and described the first filler (2) particle diameter is 30-80mm, and the second filler (3) particle diameter is 20-60mm, and the 3rd filler (4) particle diameter is 10-30mm.
4. the purifying method of controlling as claimed in claim 1 extraneous contamination source and the black smelly river course of restoration of the ecosystem, is characterized in that: described aerobic aeration pond adopts the mode of micro-pore aeration, dish formula aeration or disc type aeration, through the river after Biological Pretreatment, enters river course.
5. the purifying method of controlling as claimed in claim 1 extraneous contamination source and the black smelly river course of restoration of the ecosystem, is characterized in that: the described waterplant of step (3) in thorn eel grass, close tooth eel grass, black algae, waterweed, water caltrop, hornwort, eel grass one or more.
6. the purifying method of controlling as claimed in claim 1 extraneous contamination source and the black smelly river course of restoration of the ecosystem, is characterized in that: the described aeration oxygen replenishing equipment of step (4) mainly comprises jet aerator, micro-pore aeration, dish formula aeration, disc type aeration and/or mobile solar energy aeration boat.
7. the purifying method of controlling as claimed in claim 1 extraneous contamination source and the black smelly river course of restoration of the ecosystem, is characterized in that: in step (5), filter-feeding fish is silver carp bighead, and described predacious fish is snakehead and mandarin fish, and described zoobenthos is screw, freshwater mussel and spiral shell;
Wherein said filter-feeding fish and predacious fish are 30-80g/m 3, described screw, freshwater mussel and spiral shell are 10-50g/m 3.
8. the purifying method of controlling as claimed in claim 1 extraneous contamination source and the black smelly river course of restoration of the ecosystem, is characterized in that: the described emergent of step (6) is one or more in reed, cattail, Spiked Loosestrife or Scirpus tabernaemontani.
9. control as claimed in claim 1 the purifying method in extraneous contamination source and the black smelly river course of restoration of the ecosystem, it is characterized in that: in river course, build aquatic vegetation, select one or more plantations in water caltrop, p.malaianus, Haloragidaceae Myriophyllum spicatum, thorn eel grass, close tooth eel grass, waterweed, hornwort, water caltrop, Potamogeton pectinatus L and eel grass, density is 30-60 strain/m 2; Waterplant coverage is 30-60%; Maintain good ecotope, the nutrition source that plant is absorbed is partly with water-outlet body, regularly submerged plant is pruned; For reducing the nutrition of waterplant absorption, in water body, return, gather in and salvage autumn and winter to the waterplant of apoptosis, and death domain is reseeded.
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